This document discusses Actinomyces israelii, a bacteria that can cause cervicofacial actinomycosis, an infection in the head and neck region. A. israelii is a gram-positive rod-shaped bacteria commonly found in the mouth. It can cause cervicofacial actinomycosis when introduced through breaks in the skin or mucosa. Symptoms include soft tissue swelling, draining sinuses, and lumps in the neck region. Without treatment, the infection can spread to other parts of the body and cause serious complications like pneumonia, brain abscess, or osteomyelitis. The document emphasizes the importance of early diagnosis and treatment of A. is

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2. • Transitional form
Like Fungi- mycelial network of
branching filaments.
Like Bacteria- thin, posses cell
wall.
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3. • Low socioeconomic status
• Agricultural workers
• Poor dental hygiene.
Predominance ratio :
Male : Female = 3:1
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Indian Dental academy
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• Leader continuing dental education
• Offer both online and offline dental
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5. Maxillofacial trauma
Tooth extraction –
non healing socket
Gingival debris
Periodontal disease
Dental caries
Dental plaque
Dental calculus
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7. • Gram positive rods
• Length : up to 50µm
• wide : 0.4-1.0µm
• Straight
• Curved
• Single
• Clusters
• Chains www.indiandentalacademy.com

8. • Co-pathogens inhibits host defense
(fusobacteria, staphylococci,etc.,)
• Negative oxygen tension
• Glucose uptake from host
• Production of Propionic Acid
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9. THIOGLYCOLLATE MEDIUM
or
BRAIN – HEART INFUSION AGAR
Incubated anaerobically at 37°C for 48hrs,
2-3 weeks for identification.
A. israelii –
Solid media- white colored, rough,
MOLAR TOOTH COLONY.
Liquid media- FLUFFY BALLS –
bottom of the tube.
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12. • Club shaped filaments
• Polymorphonuclear leuckocytes
• Granulation tissue
• Radiating rosette pattern
• Peripheral band of FIBROSIS
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13. • Pain less - Soft tissue swelling
• Reddish or bluish discoloration
• Nodules – tender - non tender
• Multiple sinuses – draining pus
• Fever
• Lymphadenopathy- absent
• Chewing difficulties & Trismus
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15. Ignores tissue planes & invading surrounding
tissues or organs.
– RS – pneumonia, empyema,
thoracic draining fistulas.
– CNS –brain abscess, meningitis,
subdural empyema–DEATH.
Osteomyelitis – mandible.
Hematogenous – widespread dissemination.
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16. Chronic
Fibrosis
Cervicofacial
Actinomycosis
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18. This presentation highlights
the role of A. israelii in causing
cervicofacial actinomycosis,
which may prove to be fatal
if not diagnosed and treated
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